[eriksmith]

I bought the car non-running. The kid that had it before me flooded the engine with antifreeze while trying to put a larger throttle body and egr plate on. After this the engine started tapping.

I believe it had collapsed lifters, so I replaced them. Meanwhile I removed the heads and rebuilt them... regrinding the valve seats, replacing the valve seals, etc... I changed the oil and motor flushed the engine a few times hoping it would remove the remaining antifreeze. After all of this, it is still tapping.

Any suggestions on what to do next?